Unveiling the Mysteries of Sea Life

The video explores the vast and varied marine environment, highlighting human familiarity with iconic species like whales and dolphins. It discusses the ocean's crucial role in climate regulation and the diversity of marine life, which is mostly found in sunlit upper layers. Coral reefs thrive in warm tropical waters, while polar regions support krill populations due to high oxygen levels. Despite our reliance on oceans, our understanding of their complex ecosystems is limited, and human activities pose significant threats. The deep ocean remains largely unexplored, with many species yet to be discovered.

What percentage of the Earth's surface is covered by water?

• 60%

• 80%

• 50%

• 70%

Which oceanic region is known for supporting highly diverse marine communities?

• Open ocean

• Coral reefs in warm, shallow waters

• Deep ocean trenches

• Polar ice caps

What conditions in the polar regions support large populations of krill?

• High salinity and low mineral content

• High temperatures and low oxygen levels

• Low temperatures and high oxygen levels

• Low salinity and high temperatures

What is a major challenge in understanding the impact of human activities on the ocean?

• Lack of technology to explore the ocean

• Inability to directly observe the impact on marine life

• Limited interest in marine research

• Excessive funding for ocean exploration

How deep does the largely unexplored ocean stretch?

• 10,000 meters

• 7,000 meters

• 5,000 meters

• 12,000 meters